2150523640644 has 48 divisors (see below), whose sum is σ = 5177281777920. Its totient is φ = 694413158400.

The previous prime is 2150523640621. The next prime is 2150523640669. The reversal of 2150523640644 is 4460463250512.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2150523640596 and 2150523640605.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21350557 + ... + 21451044.

It is an arithmetic number, because the mean of its divisors is an integer number (107860037040).

Almost surely, 2^{2150523640644} is an apocalyptic number.

It is an amenable number.

2150523640644 is an abundant number, since it is smaller than the sum of its proper divisors (3026758137276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2150523640644 is a wasteful number, since it uses less digits than its factorization.

2150523640644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42801740 (or 42801738 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 42.

The spelling of 2150523640644 in words is "two trillion, one hundred fifty billion, five hundred twenty-three million, six hundred forty thousand, six hundred forty-four".